Real Time Clock

Real Time Clock
Real Time Clocks (RTCs) are available at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many real time clock manufacturers including Analog Devices, Epson, Microchip, Micro Crystal, NXP, Renesas Electronics, STMicroelectronics & more. Please view our large selection of real time clocks below.
Results: 890
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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model RTC Bus Interface
Date Format
Time Format
RTC Memory Size
Package/Case
Battery Backup Switching
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
Series
Mounting Style
Qualification
Packaging
Renesas / Intersil Real Time Clock REAL TIME CLK/CLNDR W/EEPROM IN 8LD W
Datasheet
84In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 512 B SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL12026 SMD/SMT Tube
Renesas / Intersil Real Time Clock REAL TIME CLOCK/CALE NDARW/ EEPROM IN 8LD
Datasheet
855In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 512 B SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL12026 SMD/SMT Tube
Epson Timing Real Time Clock RX4901CEXS A0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-3ppm 2k TR
Datasheet
1,988In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 256 B Backup Switching 1.6 V 5.5 V - 40 C + 105 C RX4901CE SMD/SMT Reel, Cut Tape, MouseReel
Epson Timing Real Time Clock RX8901CE XB B0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-5ppm 2k TR
Datasheet
986In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) No Backup Switching 1.6 V 5.5 V - 40 C + 105 C RX8901CE SMD/SMT Reel, Cut Tape, MouseReel
Epson Timing Real Time Clock RX8901CE XS A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-3ppm 2k TR
Datasheet
695In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) No Backup Switching 1.6 V 5.5 V - 40 C + 105 C RX8901CE SMD/SMT Reel, Cut Tape, MouseReel
Ambiq Real Time Clock Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN
Datasheet
366In Stock
3,000Expected 29/09/2026
Min.: 1
Mult.: 1

Artasie I2C
STMicroelectronics Real Time Clock Serial I2C bus RTC
Datasheet
93In Stock
7,500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 32 B SOIC-8 Backup Switching 3 V 5.5 V - 40 C + 85 C M41T82 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock 256K (32Kx8) 70ns
Datasheet
1In Stock
720Expected 24/11/2026
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 32 kB PCDIP-28 Integrated Battery 4.5 V 5.5 V 0 C + 70 C M48T35Y Through Hole Tube
Microchip Technology Real Time Clock I2C RTCC 64B SRAM No VBAT
Datasheet
715In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B PDIP-8 No Backup Switching 1.8 V 5.5 V - 40 C + 85 C Through Hole Tube
Microchip Technology Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-64
Datasheet
920In Stock
Min.: 1
Mult.: 1

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B MSOP-10 Backup Switching 1.8 V 3.6 V - 40 C + 85 C SMD/SMT Tube
Microchip Technology Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48
Datasheet
121In Stock
Min.: 1
Mult.: 1

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 2 kB TSSOP-14 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT Tube
Microchip Technology Real Time Clock 2Kb EE 64B SRAM WD TED EUI-64
Datasheet
5In Stock
Min.: 1
Mult.: 1

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 2 kB SOIC-14 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Real-Time Clocks
Datasheet
484In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Multiplexed YY-MM-DD-dd HH:MM:SS (24 hr) 114 B SO-24 4.5 V 5.5 V 0 C + 70 C DS12885S SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator
Datasheet
128In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) 64 B WLP-8 Backup Switching 1.6 V 5.5 V - 40 C + 85 C SMD/SMT Reel, Cut Tape, MouseReel

Diodes Incorporated Real Time Clock 1.8V-5.5V Real Time Clock 12C bus
Datasheet
1,668In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Reel, Cut Tape, MouseReel

Diodes Incorporated Real Time Clock 2-Wire Real-time Clock module
Datasheet
324In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Reel, Cut Tape, MouseReel

Diodes Incorporated Real Time Clock Real-time Clock IC
Datasheet
18In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Reel, Cut Tape, MouseReel
Epson Timing Real Time Clock RX4111CE:A3 REAL TIME CLOCK SPI-BUS 3.0V 11.5PPM 250TR
Datasheet
5,840In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Serial 4-Wire, SPI Backup Switching 1.6 V 5.5 V - 40 C + 85 C RX4111CE SMD/SMT Reel, Cut Tape, MouseReel
NXP Semiconductors Real Time Clock RTC Module with I2C or SPI interface featuring backup battery switch-over function in HLSON16 package.
Datasheet
262In Stock
12,000Expected 01/06/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

Serial, I2C, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) Backup Switching 1.2 V 5.5 V - 40 C + 85 C PCF2131 SMD/SMT Reel, Cut Tape, MouseReel
NXP Semiconductors Real Time Clock Low Power Real time clocks
Datasheet
4,235In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) DFN2626-10 No Backup Switching 900 mV 5.5 V - 40 C + 85 C PCF85063B SMD/SMT Reel, Cut Tape, MouseReel

NXP Semiconductors Real Time Clock Low Power Real time clocks
Datasheet
126In Stock
25,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) TSSOP-8 Backup Switching 900 mV 5.5 V - 40 C + 85 C PCF85263A SMD/SMT Reel, Cut Tape, MouseReel
Texas Instruments Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB
Datasheet
17In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 32 B PLCC-28 Backup Switching 4.5 V 5.5 V - 40 C + 85 C DP8570A SMD/SMT Tube
Texas Instruments Real Time Clock Real Time Clock A 92 6-DP8573AVX/NOPB A A 926-DP8573AVX/NOPB
Datasheet
8In Stock
70Expected 08/06/2026
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 32 B PLCC-28 Backup Switching 4.5 V 5.5 V - 40 C + 85 C DP8573A SMD/SMT Tube
Renesas / Intersil Real Time Clock LDAL TIME CLK & TEMP COMPENSATED CR
Datasheet
50In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 128 B DFN-20 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL12020 SMD/SMT Reel, Cut Tape, MouseReel
Renesas / Intersil Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS
Datasheet
955In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) TDFN-8 No Backup Switching 1.8 V 3.6 V - 40 C + 85 C ISL12058 SMD/SMT Tube